Hesitation: transmission or something else?

[ubetdavid]

Hi Rangers, new to the post but have found points very helpful.
Wanted to get an opinion from 'community' on my 2019 Lariat 4x4 (37k miles).

Every time (from a dead stop) the truck 'engine' accelerates, however there is a 1/2 or 1/4 second lag before the tranny engages. Tranny works fine; no problems.

I've always been brought up that when vehicles do this there is a problem (looseness) with one of the three (?) universal joints along the drive shaft. Bad U joint, bearings, etc.

But, this is the time I've purchased a truck with 4x4 and don't know if this lag is normal for a 4x4?

If so, problem solved and I just have to get used to it. I love the truck but this lag/hesitation worries me.

Any suggestions? BTW, air filter has already been changed.

Thanks 'Rangers,' appreciate your time!

Sponsored

 

[joeduran3]

I have a 2020 Lariat 4x4 and don't experience that kind of hesitation. I have 37k miles.

 

[ubetdavid]

Definitely NOT encouraging... Thank for the info tho!

 

[NotBudule]

Try it in sport mode and see if anything changes...

 

[Dr_Strangelove]

Worry? Never.

It does sound like the transmission on your truck is slipping, though, which is not normal on the 4x4 or any Ranger for that matter. I'd take it in ASAP but call the selling dealer to find out if they want you to take it to them or a Ford dealership.

Slipping transmissions on this forum generally start with a trans valve body replacement and end with an overhaul or transmission replacement - but I could only find 2 threads with conclusions on them. This one is the most comprehensive:

https://www.ranger5g.com/forum/threads/transmission-slipping-and-rough-shifts.23393

 

[Ranger X]

Throttle by wire is most likely what you are experiencing. Try the sport mode like @NotBudle suggested and then go out and buy a throttle commander.

 

[StarLord]

Unhook your battery and let the computer reset itself. Then take it for a drive.

4x4 is only activated with the selector knob, therefore 2 wheel drive is always the default.

 

[airline tech]

Hmm - Does the engine make a roaring sound ?
Might be Fan Clutch , normal lag when cold.
Now if Transmission, lag I would check the fluid level low fluid would cause a delay in pressure build.

 

[Rp930]

Normal. Quit flooring it. It will perform better with a more progressive throttle.

 

[ControlNode]

Mine has an issue with one turn in my town from a light. It pulls power almost every time there, even though I'm not spinning, but the way the road goes up and down and back up while turning the system things there is loss of traction and pulls power until I exit the turn and the wheel is straight. No issue if I fully disable traction control, and still no spinning, but the data over that uneven road though just wheel speed and accelerometer data input to the PCM confuses it.

 

[Tres3]

Also take a look at this : https://www.ranger5g.com/forum/threads/bucking-surging-epidemic.14581/
You did say the engine revs up, but this also causes hesitation on takeoff. Start around post #292.

 

[Msfitoy]

I don't know if it's been mentioned but...are you stopped and ASS has turned off your engine?

 

[Billythekidd]

I have noticed that on mine as well... 2019 Lariat FX4 and if I turn off the auto start stop with the switch that no longer happens.

 

[ubetdavid]

Thanks very much folks for the great suggestions! Yes, my ASS is off, no, there is no clunking of the tranny between gears; actually it runs smooth. Throttle commander I nothing about (should educate myself), and I'm not flooring it when I take off. And checking the tranny oil; what the HELL? Who puts the stick 'under' the engine, next to the exhaust?!? I'll have to borrow my neighbor's ramps to check that! HOWEVER, I did not know about the Sport setting on the shift. Wow, what a difference! Thanks very much NotBudule! Night and day!!

Appreciate you all!

 

[Roscoe P]

Hi Rangers, new to the post but have found points very helpful.
Wanted to get an opinion from 'community' on my 2019 Lariat 4x4 (37k miles).

Every time (from a dead stop) the truck 'engine' accelerates, however there is a 1/2 or 1/4 second lag before the tranny engages. Tranny works fine; no problems.

I've always been brought up that when vehicles do this there is a problem (looseness) with one of the three (?) universal joints along the drive shaft. Bad U joint, bearings, etc.

But, this is the time I've purchased a truck with 4x4 and don't know if this lag is normal for a 4x4?

If so, problem solved and I just have to get used to it. I love the truck but this lag/hesitation worries me.

Any suggestions? BTW, air filter has already been changed.

Thanks 'Rangers,' appreciate your time!

Has the Battery ever been replaced ? My truck was acting kinda strange .Lights going off early .Interior lights not coming on .That was to preserve the battery to crank it next time. Sounds strange but I would get the battery tested at least . My transmision was acting funny for a while but its much better after replacing the battery . If the stop/start button doesn't work, that's usually then first sign. Doesn't make sense to me
but there is a difference.

Sponsored